Attach parameter to button.addTarget action in Swift

If you want to send additional parameters to the buttonClicked method, for example an indexPath or urlString, you can subclass the UIButton:

class SubclassedUIButton: UIButton {
    var indexPath: Int?
    var urlString: String?
}

Make sure to change the button's class in the identity inspector to subclassedUIButton. You can access the parameters inside the buttonClicked method using sender.indexPath or sender.urlString.

Note: If your button is inside a cell you can set the value of these additional parameters in the cellForRowAtIndexPath method (where the button is created).

You cannot pass custom parameters in addTarget:.One alternative is set the tag property of button and do work based on the tag.

button.tag = 5
button.addTarget(self, action: "buttonClicked:", 
    forControlEvents: UIControlEvents.TouchUpInside)

Or for Swift 2.2 and greater:

button.tag = 5
button.addTarget(self,action:#selector(buttonClicked),
    forControlEvents:.TouchUpInside)

Now do logic based on tag property

@objc func buttonClicked(sender:UIButton)
{
    if(sender.tag == 5){

        var abc = "argOne" //Do something for tag 5
    }
    print("hello")
}